Snowfall and hail have occurred in New England, parts of Pennsylvania and New York. It is snowing in other parts of the state.
It said that a quarter of an inch of snow is likely to accumulate on Sunday.
“Extremely dangerous travel conditions. Untreated surfaces will be very slippery. Isolated power outages are possible,” the NWS office said.
Residents are urged to avoid driving unless absolutely necessary.
“If you must travel, keep a spare flashlight, food and water in your vehicle in case of an emergency,” said the NWS office at State College.
By Sunday afternoon, the cool mix of winter rain over the Northeast will turn to snow for most and snow in some high altitude areas before ending this evening,
A quarter-inch of snow is expected to fall anywhere across wide areas of New England on Sunday. But most of the snow accumulation is projected to reside west of major metro areas.
Severe storm and possible tornado expected in the south
From East Texas to the Florida Panhandle, more than 10 million people could face severe to severe storms today.
“Parts of Louisiana, Mississippi and Alabama could receive devastating thunderstorms, some tornadoes and isolated large hail today,” the National Weather Service’s Storm Prediction Center said on Sunday.
Louisiana, Mississippi and Alabama now have a level 2 out of 5 risk for severe tornadoes. Cities under this threat include Jackson and Hattiesburg in Mississippi.
Flooding could also be a problem for parts of the Gulf Coast, with some areas expected to receive 2 to 3 inches of rain on Sunday.
Cold, arctic air covers the upper midwest
On Sunday, sub-zero wind gusts are expected to cover most of the Upper Midwest.
Winter Wind Alerts are in effect from Montana to Michigan’s Upper Peninsula, gusts of -20 to -40 degrees Fahrenheit are possible.
High temperatures in North Dakota and some northern parts of Michigan will struggle to rise above zero degrees.
This severe cold will extend to the Great Lakes on Sunday and into the northeast through Monday and Tuesday.
On Tuesday morning, sub-zero temperatures are expected over the northeast and interior of New England.
Brutal cold air and strong winds will cause heavy lake effect snowfall below Lake Superior and Lake Ontario.
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